To provide a suspension device for a vehicle, in which a bearing, an upper spring seat, a dust cover form an assembly to be mounted in a cartridge manner, they are stably held, and weight and a cost are reduced.

The suspension device comprises: a shock absorber 9 interposed between a vehicle-body-side mount C and a vehicle axis; the upper spring seat A held by the vehicle-body-side mount C through the bearing 19, and the under spring seat 10 disposed to the shock absorber 9; and a suspension spring 11 interposed between the upper spring seat A and under spring seat 10; and the dust cover 23 covering the outside of the shock absorber 9. The rubber upper spring seat A is fit to an outer circumference of the bearing 9 formed of synthetic resin material. An upper end part of the dust cover 23 is hooked to an inner circumferential side of the bearing 19 while supporting a lower part of the upper spring seat A. The bearing 19, upper spring seat A, dust cover 23 are integrally attached to vehicle-body-side mount C through the bearing 19.